/* -*-c++-*- */
/* osgEarth - Geospatial SDK for OpenSceneGraph
 * Copyright 2020 Pelican Mapping
 * http://osgearth.org
 *
 * osgEarth is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */

#ifndef OSGEARTH_SHADER_LAYER_H
#define OSGEARTH_SHADER_LAYER_H

#include "VisibleLayer"

using namespace osgEarth;

namespace osgEarth
{
    /**
     * Layer that just renders the terrain surface with a shader
     * and nothing else.
     */
    class OSGEARTH_EXPORT ShaderLayer : public VisibleLayer
    {
    public:
        class OSGEARTH_EXPORT Options : public VisibleLayer::Options {
        public:
            META_LayerOptions(osgEarth, Options, VisibleLayer::Options);
            virtual Config getConfig() const override;
            static Config getMetadata();
        private:
            void fromConfig(const Config& conf);
        };

    public:
        META_Layer(osgEarth, ShaderLayer, Options, VisibleLayer, Shader);

    public: // Layer

        virtual void init() override;

    protected:

        //! Destructor
        virtual ~ShaderLayer() { }
    };
}

OSGEARTH_SPECIALIZE_CONFIG(osgEarth::ShaderLayer::Options);


#endif // OSGEARTH_UTIL_DEBUG_IMAGE_LAYER_H
